Half-round base window component



FIG. 1 is a front elevational view of a half-round base window component showing our new design, the rear plan view being flat;

FIG. 2 is a bottom plan view of the half-round base window component of FIG. 1.; and,

FIG. 3 is a right side elevational view of the half-round base window component of FIG. 1 the left side elevational view being a mirror image thereof. 

The ornamental design for a half-round base window component, as shown and described. 